| 摘要 |
<p>Disclosed is a hydraulic supply system for an automatic vehicle transmission. According to an embodiment of the present invention, the hydraulic supply system for an automatic vehicle transmission, which generates low and high hydraulic pressure using the oil stored in an oil fan and supplies the oil to a low pressure unit and a high pressure unit, comprises a low pressure oil pump which sucks the oil stored in the oil fan through a sucking passage and discharges the oil through a first low pressure passage; a low pressure regulator valve which controls the hydraulic pressure of the first low pressure passage to make low hydraulic pressure stable and supplies the hydraulic pressure to a second low pressure passage; a first switch valve which is arranged between the second low pressure passage and a third low pressure passage connected to a low pressure unit and selectively opens and closes the passage; a first bypass passage which connects the second low pressure passage to the third low pressure passage and has an orifice arranged in the middle; a high pressure oil pump which boosts the hydraulic pressure supplied through the first low pressure unit and discharges the pressure through the high pressure passage; a second bypass passage which connects the first low pressure passage to the high pressure passage; a second switch valve which selectively opens and closes the passage by being arranged in the second bypass passage; and a high pressure regulator valve which controls the hydraulic pressure supplied from the high pressure oil pump through the high pressure passage and the hydraulic pressure selectively supplied through the second switch valve to make hydraulic pressure stable and supplies the hydraulic pressure to the high pressure unit.</p> |
